2007/11/30 by Eduardo V. Castro, N. M. R. Peres, Tobias Stauber +2 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Bilayer #Bilayer graphene #Chemistry #Condensed matter physics #Diamond and Carbon-based Materials Research #Ferromagnetism #Graphene #Graphene research and applications #Magnetic field #Magnetization #Materials science #Nanotechnology #Phase (matter) #Phase diagram #Physics #Quantum and electron transport phenomena #Quantum mechanics #cond-mat.mes-hall #cond-mat.str-el
paper · pdf · doi:10.1103/physrevlett.100.186803
published as Phys. Rev. Lett. 100, 186803 (2008) · 4 pages, 4 figures, added section on disorder and gamma_3 effects
arxiv created 2008/05/05 · openalex publication_date 2008/05/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We compute the phase diagram of a biased graphene bilayer. The existence of a ferromagnetic phase is discussed with respect to both carrier density and temperature. We find that the ferromagnetic transition is first-order, lowering the value of U relatively to the usual Stoner criterion. We show that in the ferromagnetic phase the two planes have unequal magnetization and that the electronic density is holelike in one plane and electronlike in the other.